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Ultrasonic Receiver . Preliminary Design Review Team F : Zach Garber, Jason Jonas, Scott Clausen, and Jonathan Gabler. Functional Decomposition. Interface Document. Tech Specs. Amplifier – Burr-Brown OPA228

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Ultrasonic receiver
Ultrasonic Receiver

Preliminary Design Review

Team F : Zach Garber, Jason Jonas, Scott Clausen, and Jonathan Gabler


Functional decomposition
Functional Decomposition



Tech specs
Tech Specs

Amplifier – Burr-Brown OPA228

  • Gain – The high open-loop gain of this amplifier is 160 dB and a minimum closed-loop gain of 5 V/V.

  • Gain Flatness – The gain flatness is ± 1 dB.

  • Bandwidth – The bandwidth of this amplifier is 33 MHz.

  • DC Voltage – This amplifier can operate within a range of ±2.5 V to  ±18 V input.

  • CMRR – The amplifier has a CMRR of 138 dB.

    Microwave Mixer – Philips SA602A

  • 3rd Order Intercept – The 3rd order intercept point is -13 dBm.

  • Noise Figure – The mixer has a noise figure of less than 4.7 dB.

  • Supply Voltage – This mixer operates on a supply voltage between 4.5 V to 8 V.

  • Bandwidth – The mixer can operate up to 200 MHz.

    Local Oscillator – Linear Technology LTC6903

  • Carrier Frequency – The carrier frequency of this local oscillator is 1 kHz to 68 MHz.

  • Supply Voltage – This oscillator operates on a supply voltage between 2.7 V to 5.5 V.

  • Output Resistance – The oscillator has an output resistance of 45 Ω.

  • Output Voltage – The oscillator has an output voltage of 5.3 V.

    Low-pass Filter – Maxim MAX7400

  • Kind – This filter is a low-pass filter.

  • Type – This type of filter is an 5th-order low-pass butterworth filter.

  • Input Power – The operating DC supply voltage is 5 V.

  • Corner Frequency – The filter has a corner frequency of up to 15 kHz.

  • Distortion – This filter has a total harmonic distortion plus noise of less than -82 dB.

  • Supply Voltage – The filter operates on a supply voltage of 4.5 V to 5.5 V.


Testing and evaluation
Testing and Evaluation

  • Each functional element first implemented on PCB

  • Connect whole system piece by piece


Arduino
Arduino

  • Program variable resistor

  • Program local oscillator

  • Generate a 35 kHz sine wave

  • GPS clock

  • Data storage

  • Output to USB




Risk mitigation
Risk Mitigation

Signal compatibility

  • Read all datasheets carefully

    Arduino coding

    • Watch tutorials and start coding

      • Reach out for help from classmates with more experience

        Custom PCB

    • Start the acclimation process soon

    • Submit design early